#ifndef _LIST_H_
#define _LIST_H_
#include "element.h"

UserNode *userHeadNode();
void addUserNode(UserNode *head, UserData *data);
void removeUserList(UserNode *head);
FlightNode *flightHeadNode();
void addFlightNode(FlightNode *head, FlightData *data);
void removeFlight(FlightNode *head, int index);
void removeFlightList(FlightNode *head);
#endif